Wide Area Federal Aviation Administration Augmentation System - - PowerPoint PPT Presentation

▶
wide area
SMART_READER_LITE
LIVE PREVIEW

Wide Area Federal Aviation Administration Augmentation System - - PowerPoint PPT Presentation

Feb 26, 2024 438 likes •738 views

Wide Area Federal Aviation Administration Augmentation System (WAAS) Ionospheric Effects Symposium By: Jason Burns Technology Evolution Lead Federal Aviation Administration Date: May 12, 2015 Agenda WAAS Overview Ionospheric

slide-1
SLIDE 1

Federal Aviation Administration

Wide Area Augmentation System (WAAS)

By: Jason Burns Technology Evolution Lead Federal Aviation Administration Date: May 12, 2015

Ionospheric Effects Symposium

slide-2
SLIDE 2

2 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

Agenda

  • WAAS Overview
  • Ionospheric Effects on WAAS
  • Future Plans
  • User Segment Update
slide-3
SLIDE 3

3 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

WAAS Overview

slide-4
SLIDE 4

4 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

WAAS Program Overview

  • WAAS provides precise

navigation and landing guidance covering the entire National Air Space (NAS)

  • Combination of

ground-based and space-based assets

  • Augments the Global Positioning System (GPS) Standard

Positioning Service (SPS)

  • Provides both safety and capacity improvements in the NAS

and has been operational since 2003

  • Can reduce FAA operations costs by enabling the removal of

legacy ground-based navigation infrastructure

slide-5
SLIDE 5

5 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

WAAS Infrastructure

slide-6
SLIDE 6

6 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

WAAS Supported Operations

slide-7
SLIDE 7

7 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

WAAS Coverage

2003 IOC – LPV Coverage in lower 48 states only 2015 Coverage - Full LPV 200 Coverage in CONUS (3 Satellites) 2008 Coverage - Full LPV 200 Coverage in CONUS (2 Satellites)

Note: Plots are of LPV availability not LPV-200

slide-8
SLIDE 8

8 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

WAAS RNP 0.3 and RNP 0.1 Coverage

slide-9
SLIDE 9

9 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

WAAS Development Phases

  • Phase I: IOC (July 2003) Completed

– Provided LNAV/VNAV/Limited LPV Capability

  • Phase II: Full LPV (FLP) (2003 – 2008) Completed

– Improved LPV availability in CONUS and Alaska – Expanded WAAS coverage to Mexico and Canada

  • Implemented new WRSs in these countries which increased the number of ionospheric measurements at the

edge of WAAS service volume

  • New GEOs implemented with improved ranging performance. This provided increased continuity and

availability for WAAS operations.

  • Phase III: Full LPV-200 Performance (2009 – 2014) Completed

– Improve performance during moderate ionospheric activity

  • Implemented Kriging to reduce conservatism in models and increase availability

– Preparation for GPS L5 transition

  • Phase IV: Dual Frequency (L1,L5) Operations (2014 – 2044)

– Sustain WAAS GEOs – Technology refresh to address equipment obsolescence – Infrastructure modifications to support future L1/L5 user capability – Transition from use of L2 P(Y) to L5 in WAAS and provide dual-frequency service

  • Planning to transition within 2 years of GPS L5-signal Full Operational Capability (FOC)
slide-10
SLIDE 10

10 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

Dual Frequency Operations

  • ‘Sunset’ of L2 P(Y) semi-codeless technique compels WAAS to use

another signal to maintain current service

– USG Federal Register Notice identified ‘sunset’ in December 2020 – L2C/L5 readiness dates slipping (updates in Federal Radio-navigation Plan)

  • In May 2014 WAAS Final Investment Decision for Phase IV Segment 1

Dual Frequency Operations (DFO) was approved

– Segment 1 - Develop infrastructure improvements to support L5 & Tech Refresh – Segment 2 - Implementation of L1/L5 user capability

slide-11
SLIDE 11

11 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

Current SBAS Availability

slide-12
SLIDE 12

12 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

SBAS Availability w/ L1/L5 User

slide-13
SLIDE 13

13 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

Ionospheric Effects

  • n WAAS
slide-14
SLIDE 14

14 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

“WAAS Performance Analysis Report”, Report #52, http://www.nstb.tc.faa.gov/reports/waaspan52.pdf, Apr 2015.

PRN 29 Maintenance Elevated Geomagnetic Activity

slide-15
SLIDE 15

15 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

“WAAS Performance Analysis Report”, Report #52, http://www.nstb.tc.faa.gov/reports/waaspan52.pdf, Apr 2015.

Elevated Geomagnetic Activity

slide-16
SLIDE 16

16 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

“WAAS Performance Analysis Report”, Report #52, http://www.nstb.tc.faa.gov/reports/waaspan52.pdf, Apr 2015.

slide-17
SLIDE 17

17 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

“WAAS Performance Analysis Report”, Report #52, http://www.nstb.tc.faa.gov/reports/waaspan52.pdf, Apr 2015.

slide-18
SLIDE 18

18 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

Future Planning

slide-19
SLIDE 19

19 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

WAAS Phase IV Investigations

  • Dual-Frequency Multi-constellation Capability

– International focus is on taking advantage of other GPS like constellations

  • International Civil Aviation Organization (ICAO) Navigation Systems Panel (NSP) has

developed work plan that supports development of future standards for use of other Global Navigation Satellite Systems (GNSS)

  • ICAO working on CONOPS addressing all DFMC applications (e.g. SBAS, GBAS)

– User equipment standards for Dual-Frequency operations

  • FAA working with SBAS Interoperability Working Group (IWG) on definition document

that provides the basis for interface design and MOPS development for L1/L5 and multi-constellation

  • Advanced RAIM (ARAIM)

– Avionics-centric approach to dual-frequency multi-constellation – ARAIM subgroup developing more detailed concept definition

  • Will be used to coordinate standards development with ICAO, RTCA and EUROCAE
  • Updated Milestone 2b report analysis and conclusions based on public feedback and

incorporate in Milestone 3 report at meeting held the week of March 23rd 2015

  • The Milestone 2b report to be published at following meeting when formal review

cycle completes

http://www.gps.gov/policy/cooperation/#europe

slide-20
SLIDE 20

20 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

User Segment Update

slide-21
SLIDE 21

21 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

Users Depending on WAAS

  • Approximately 82,000 WAAS equipped aircraft in the NAS

– WAAS receivers provided by companies such as: Garmin, Universal, Rockwell Collins, Honeywell, Avidyne, Innovative Solutions & Support (IS&S), Thales and Genesys Aerosystem (Chelton)

  • Since 2006, aircraft equipage rates has increased each year
  • Smaller airports and communities they serve are within reach,

even in low visibility weather conditions

  • All classes of aircraft are served in all phases of flight
  • Enabling technology for NextGen programs

– Automatic Dependent Surveillance Broadcast (ADS-B) – Performance Based Navigation (PBN)

  • Ex. - Area Navigation (RNAV), Required Navigation Performance (RNP), and Point in Space (PinS)

procedures

slide-22
SLIDE 22

22 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

Airports with WAAS LPV/LP Instrument Approaches

As of March 5, 2015

  • 4,120 LP/LPVs combined
  • 3,534 LPVs serving 1,726 Airports
  • 914 LPV-200’s
  • 2,395 LPVs to Non-ILS Runways
  • 1,139 LPVs to ILS runways
  • 1,638 LPVs to Non-ILS Airports
  • 586 LPs serving 423 Airports
  • 583 LPs to Non-ILS Runway
  • 3 LPs to ILS Runways
slide-23
SLIDE 23

23 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

slide-24
SLIDE 24

24 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

Backup Slides

slide-25
SLIDE 25

25 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

Federal Register Notice

  • L1/L2 Sunset

– In 2008 the Office of Space Commercialization produced a Federal Register Notice detailing the U.S. Government's plan to phase out codeless and semi-codeless [L2 P(Y)] access to GPS by 31 December 2020 – FAA concern with the elimination of L2 P(Y) semi-codeless relationship prior to ability to transition to the new L5 signal – Federal Radionavigation Plan (FRP) is under revision

  • Expect 2014 FRP language to support WAAS transition schedule

– DoD GPS satellite launch plans continue to delay FOC of L2C and L5 service

  • New dates will be included in 2014 FRP
slide-26
SLIDE 26

Legend Milestone Service Ended Service Started Satellite Development

WAAS Schedule

SC Development Comm Upgrades G-III Receiver

FAA Independent Activities DFO and GEO Contracts

CY11 CY12 CY13 CY14 CY15 CY16 CY17 CY18 CY19

7/15 3/14 9/16 Development Production Fielding 3/13 1/13 5/16 G-III Test Circuits System-Wide Segment 1

GEO 5 GEO 6 GEO 7 AMR CRW CRE Dual Frequency

Segment 2 11/15 7/17 7/17 Reacquired 10/17 12/13 DFO SIR 9/14 DFO Award Base Contract Complete Base Contract Complete Base Contract Complete

CY20

Option Years

Eutelsat 117 West B (Satmex 9)

slide-27
SLIDE 27

27 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

WAAS Enables Performance Based Navigation

slide-28
SLIDE 28

28 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

Current WAAS GEO Coverage

slide-29
SLIDE 29

29 Federal Aviation Administration Ionospheric Effects Symposium May 12, 2015

29

“WAAS Performance Analysis Report”, Report #52, http://www.nstb.tc.faa.gov/reports/waaspan52.pdf, Apr 2015.